Dental tool



F/A. KOTTS DENTAL TOL.

(No Model.)

Patented Feb. Z0, 1894.

PATENT OFFICE.

FREDERICK A. KOTTS, OF MANCHESTER, MICHIGAN.

DENTAL'TooL.

SPECIFICATION forming part of Letters Patent No. 514,941, dated February 20, 1894.

' Application filed July l5, 1893. Serial No. 480,577- (No model.)

To all whom it may concern:

Beit known that I, FREDERICK A. KoTTs, a citizen of the United States, residing at Man# chester, county of Washtenaw, State of Michigan, have invented a certain new and useful Improvement in Dental Apparatus; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the artto which it pertains to make and use` the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to dental apparatus, and has for its object improvements in that class of apparatus employed to introduce either medicated or unmedicated heated air or gas to the tooth under treatment.

In the drawings, Figure l, shows the device embodying my invention. Fig. 2, shows the device open or broken at the hinged part, to receive a cylinder inclosing material for medicating the air or gas. Fig. 3, isa sectional elevvation. Fig. 4 shows a right hand corkscrew nozzle.

The device shown in the drawings is adapted and intended to be used in connection with a tank of compressed air, but it may be used in connection with a rubber compression bulb, by means of which the air can be forced through it as it is used; both of these means for furnishing the air are in common use.

In the drawings A, indicates a hollow handle, to one end of which is secured a supporting frame B; as shown in the drawings, this consists of a short tubular part, b, that forms a ferrule for the end of the handle A, and an extending semi-tubular part c, provided at its forward extremity with ears, d, which are perforated, and through which pass the trunnions or pins, e, attached to a short tube D, adapted to receive the-medicament. The rear end of the tube D, is preferably finished with a conical surface f, adapted to t into a hollow coned seat,f, on the forward end of a tube F, that is concealed within the handle A. The main erstem part of the tube F, is smaller in diameter than the enlarged forward end f2. The stem part F, is perforated throughout its length. At the rear of the stem of the 5o tube F, is a screw threaded part, g, adapted to be secured to a tube G, which protrudes from the rear end of the handle A, and is tinished at its protruding end with a knob, h, over which the end of the rubber air tube H, can be secured. The hollow within the handle A, is larger than the outside diameter of the tube F, and a coiled spring s,is placed in the hollow and around the tube, and is held from escaping at the rear by the walls of the handle A, and at the front by the shoulder between the enlarged partfz, and the stem F. A suitable packing ring p, preferably of asbestus felt, is placed in the front face of the enlarged part f2, of the tube F.. The entire tube F, and head f2, and the tube G, can be moved longitudinally with respect to the handle A. The head f2, slipsbackward and forward within the ferrule b, when this movement is produced. The protruding part G, serves as a handle to enable the user to move these parts longitudinally one with respect to the other, and a collar g', on the protruding part G, limits the forward movement of the parts.

At the forward end of the tube D, is a short tube E, uniting the tube D, to a heating bulb J, of solid metal except for the air passage through it.

Into the forward end of the heating bulb J, is secured the nozzle K. I make these nozzles in various shapes to adapt them better to the work to be done with them.

In ordinary use the nozzle is bent as shown in Fig. 2, but in addition to making nozzles with bends of this form, I make them with bends of a cork-screw form, giving to some of them right turns and some of them left turns.

The tube D, is secured in the ears d, by means'of the pins e, which pass through the perforations in the ears and form a hinge pin or trunnion, upon which the tube D, and the parts attached to it turn from the position shown in Fig. 1, to the position shown in Fig.

2. When in the position shown in Fig. 1, the 95 coned rear endfof the tube D, is seated in the coned front end of the enlarged head f2, of the tube F, and the parts are held together tightly by the spring s.

When in the open position shown in Fig. too

tube provided with trunnions adapted to turn in said ears, a hollow tube passing through said handle, means for bringing the two tubes into line, and forming an air tight connection between them, substantially as described.

1n testimony whereof I sign this specification in the presence of two Witnesses.

FRED. A. KOTTS.

Witnesses:

FERRIS S. RANDALL, EFFIE I. CROFT. 

